for squad members certainly
yes, you could ask the sl, but on public server everything is a little bit different.
i noticed it in so many games that players who are waiting for a possibility to spawn are often bugging the sl to play a rally point.
especially if you have a constant flow of going squad members and incoming new squad members.

played a match some hours ago and some dudes asked the squad leaders several times if he could place a rally point because they didnt noticed that he had a cooldown on it.
while that happened i was in the menue and my first thought was why isnt there a cooldown timer for the rally point next to the nickname of the squadleader in the menue.
would be a neat detail and it would took some pressure from the squad leader